marching with them, visitors from the united states, germany, and china. some of them grew up in that culture. >> we were walking in the parade this morning, and there was a sea of bocamchi faces, young and old. all of a sudden i felt tears coming out of my eyes. it was amazing. >> reporter: linguists borris and beth are a big reason for this celebration. >> we're linguists, but we're wordless at this point. >> reporter: it is god's word that is the cause of the celebration. the new testament is now available in their language. and it is the linguists that finish the translations. this family moved to northern guatemala, to pick up the project started by german translator, ted and gloria, in 1969. 43 years later, they finally have a new testament they can read for themselves. >> very joyful. very happy to have in our hands the new testament in bokonchi. >> reporter: the modern bible translation movement actually began here in guatemala. this is where an indian famously challenged a missionary who was selling spanish bibles. if you're god is so smart, he sa